Results 71 to 80 of about 3,279,382 (164)
Experimental density radiography of Wudalianchi volcano with cosmic ray muons [PDF]
arXiv, 2020 Muon radiography is a promising technique to image the internal density structures upto a few hundred meters scale, such as tunnels, pyramids and volcanos, by measuring the flux attenuation of cosmic ray muons after trvaling through these targets. In this study, we conducted an experimantal cosmic ray muon radiography of the Wudalianchi volcano in ...
arxiv
FMEA Based Risk Assessment of Component Failure Modes in Industrial Radiography [PDF]
arXiv, 2016 Industrial radiography has its inimitable role in non-destructive examinations. Industrial radiography devices, consisting of significantly high activity of the radioisotopes, are operated manually by remotely held control unit. Malfunctioning of these devices may cause potential exposure to the operator and nearby public, and thus should be practiced ...
arxiv
BMJ Open, 2019 Objectives To calculate each patient’s cumulative radiation exposure and the recurrent tests during a 12-year study period, according to sex and age, in routine practice.Design Retrospective cohort study.Setting A general hospital with a catchment ...
Blanca Lumbreras +2 more
doaj +1 more source
Automated diagnosis of pneumothorax using an ensemble of convolutional neural networks with multi-sized chest radiography images [PDF]
arXiv, 2018 Pneumothorax is a relatively common disease, but in some cases, it may be difficult to find with chest radiography. In this paper, we propose a novel method of detecting pneumothorax in chest radiography. We propose an ensemble model of identical convolutional neural networks (CNN) with three different sizes of radiography images.
arxiv
Romanian Journal of Oral RehabilitationNeedle fracture during inferior alveolar nerve block is a very rare accident that can occur in the dental private practice. The incidence is reported to represent approximately 0,000007%.
Precup Alexandru Iosif +5 more
doaj +1 more source
Fast Neutron Resonance Radiography in a Pulsed Neutron Beam [PDF]
arXiv, 2003 The feasibility of performing fast neutron resonance radiography at the PTB accelerator facility is studied. A neutron beam of a broad spectral distribution is produced by a pulsed 13 MeV deuterium beam hitting a thick Be target. The potential of 3 different neutron imaging detectors with time-of flight capability are investigated.
arxiv
Towards Seamless Integration of Magnetic Tracking into Fluoroscopy-guided Interventions [PDF]
arXivThe 2D projective nature of X-ray radiography presents significant limitations in fluoroscopy-guided interventions, particularly the loss of depth perception and prolonged radiation exposure. Integrating magnetic trackers into these workflows is promising; however, it remains challenging and under-explored in current research and practice.
arxiv
Optimal particle type and projection number in multi-modality relative stopping power acquisition [PDF]
arXiv, 2019 Proton radiography combined with X-ray computed tomography (CT) has been proposed to obtain a patient-specific calibration curve and reduce range uncertainties in cancer treatment with charged particles. The main aim of this study was to identify the optimal charged particle for the generation of the radiographies and to determine the optimal number of
arxiv
Percutaneous retrieval of symptomatic bone cement embolus from the pulmonary artery
Annals of Vascular Surgery - Brief Reports and InnovationsBone cement pulmonary embolism (CPE) is not a rare complication. Most cases are asymptomatic and detected incidentally. In this study, we reported a female patient who was suffering from hemoptysis. To address this condition, our clinical group performed
Tiequan Yang, Dehai Lang, Zuanbiao Yu
doaj
CURRENT LEVELS OF MEDICAL EXPOSURE IN RUSSIA
Радиационная гигиена, 2015 We considered conditions of patients’ medical radiation exposure in Russian diagnostic radiology and nuclear medicine basing on the data of our own research, of the Unified system of individual dose control and of some relevant literature.
M. I. Balonov +6 more
doaj